She officially took on the role last November. In the film, which also features Wilson, Marion Cotillard and Adrian Brody, Bruni-Sarkozy will play a director of a Paris museum.

Though she's not trained as an actor, she said she couldn't pass up the chance to work with one the great directors of contemporary cinema.

Coming Attractions: New "Twilight" WIll "Eclipse" All Others

"I go into everything blindly, or I'd never do anything at all," she said in an interview on France's Canal+ network. "I am not an actress at all. Maybe I'll be completely hopeless, but I can't miss an opportunity like this one in my life. When I'm a grandmother, I'd like to be able to say I made a film with Woody Allen."